1972. 2012-03-29T14:18:57Z. 2012-05-03T15:34:10Z. Geological Survey (U.S.). U.S. Geological Survey. English. Public. Kentucky, Muhlenburg County, and Ohio County.
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2. Geologic map of the Flener quadrangle, Butler and Ohio Counties, Kentucky [cartographic material]
1972. 2012-03-29T19:56:54Z. 2018-02-14T14:16:21Z. Geological Survey (U.S.). The Survey. English. Public. Kentucky, Butler County, and Ohio County.
1972. 2012-03-23T15:13:49Z. 2012-05-03T15:31:43Z. Geological Survey (U.S.). The Survey. English. Public. Kentucky, McLean County, and Ohio County.
